Compass and Scale Image for Arp 147
440 million light-years (130 Megaparsecs)
This image is roughly 1.2 arcminutes (154,000 light-years or 47 kiloparsecs) wide.
HST Proposal: 11902 M. Livio, K. Noll, M. Mutchler, L. Frattare, Z. Levay, and W. Januszewski (STScI).
F450W (B), F606W (V), and F814W (I)
The image is a composite of separate exposures made by the WFPC2 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:
Blue: F450W (B)
Green: F606W (V)
Red: F814W (I)